Update pages/builders/app-developers/tutorials/sdk-estimate-costs.mdx

Co-authored-by: Zak Ayesh <[email protected]>

Author: krofax

pages/builders/app-developers/tutorials/sdk-estimate-costs.mdx

@@ -164,7 +164,7 @@ You're now going to estimate the cost of a transaction on OP Mainnet.
 
   {<h3>Estimate the L1 data fee</h3>}
 
-  You can estimate the L1 data fee with the [estimateL1GasCost](https://viem.sh/op-stack/actions/estimateL1Gas) function.
+  You can estimate the L1 data fee with the [estimateL1GasCost on the Gas Price Oracle predeploy contract](https://viem.sh/op-stack/actions/estimateL1Gas) function.
   Under the hood, this function is estimating the amount of Ethereum gas required to publish this transaction on Ethereum and multiplying it by the current Ethereum gas price (as tracked by the L2).
   This function returns the current cost estimate in wei.